When comparing Sandglaz vs Do It (Tomorrow), the Slant community recommends Sandglaz for most people. In the question“What is the best cross-platform to-do list app?”Sandglaz is ranked 38th while Do It (Tomorrow) is ranked 47th. The most important reason people chose Sandglaz is:

The interface is built around the concept of "infinity grids" where tasks are placed into time-based milestone periods. Any non-completed tasks from the current milestone automatically move to the next milestone. As such Sandglaz is best suited for teams that plan projects and tasks in milestone sprints.
The interface consists of columns of tasks organized in either days or weeks with a slide-out panel for accessing settings, search, notifications and navigating projects. Expanding a task gives access to adding subtasks, notes, attachments, comments, setting due dates, etc. Overall the interface is very utilitarian in execution with only the bare minimum of functionality taking up the space at any given time.
Tasks are assigned with @username. Each project can be shared with its own team of collaborators. And hashtags are used for categories.

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Pros

Pro

Simple interface, great for milestone sprints

The interface is built around the concept of "infinity grids" where tasks are placed into time-based milestone periods. Any non-completed tasks from the current milestone automatically move to the next milestone. As such Sandglaz is best suited for teams that plan projects and tasks in milestone sprints.

The interface consists of columns of tasks organized in either days or weeks with a slide-out panel for accessing settings, search, notifications and navigating projects. Expanding a task gives access to adding subtasks, notes, attachments, comments, setting due dates, etc. Overall the interface is very utilitarian in execution with only the bare minimum of functionality taking up the space at any given time.

Tasks are assigned with @username. Each project can be shared with its own team of collaborators. And hashtags are used for categories.

Pro

Automatic task management

Uncompleted tasks move to the next day automatically.

Pro

Very easy to collaborate with team members

You can assign tasks with @username and communicate about your collaborative to-dos right within the context of the tasks. You can also share each project with its own team of collaborators.

Pro

Advanced recurring tasks functionality

Pro

Free and without ads

Do It (Tomorrow) is available as a free app on the web, on iOS and on Android – none of which have ads.

Pro

Notebook simulation

Do It (Tomorrow) simulates the feeling of writing your to-do list on an actual by hand. You can switch the font style back to the system default font if desired.

Pro

Shorter timeframes lead to better productivity

Unlike other to-do list apps that allow users to schedule tasks far into the future, Do It (Tomorrow) allows tasks to be scheduled for today and tomorrow only. This ensures users stay focused on things that need to get done in the short term.

Pro

Clean and simple

Do It (Tomorrow) shows only the list of to-do items for today and tomorrow. No labels, tags, or other categories are needed.

Cons

Con

No native apps

It can only be accessed using the web client – there are no native apps for desktop or mobile.

Con

iPad version of Do It (Tomorrow) has a one-time fee

iPad users who want to use the app must pay a one-time fee of $4.99.

Con

Limited scheduling options

Because Do It (Tomorrow) limits scheduling options to today and tomorrow, there’s not much use for functions like alerts or recurring events.